governor romney's running mate says he agrees with something that vice president joe biden said today in north carolina. team fox coverage from the trail coming up here a bit later on the fox report. first, a virtual army of border patrol agents, sheriffs investigators and the f.b.i. now combing the mexican border to find who ever shot and killed one of their own. it happened earlier today near the town of naco, southeast of tucson in a known drug smuggling corridor there. three border patrol agents were together when the shooting happened. the agent who died is nicholas ivy, 30 years old. another of the agents wounded, but expected to survive, and a third was unhurt. >> the f.b.i. is at the scene is investigating and is going to get to the bottom of this. >> all of this now not far from the border patrol station named for brian terry, the last agent fatally shot in the line of duty. investigators found guns linked to the failed weapons sting operation fast and furious at the scene where he died in 2010. william lajeunesse with the news live tonight in los angeles. william? >> bill, n